Envelope machine



Feb. 19,'1929.

J. M. GAUNTLETT ENVELOPE MACHI NE Filed Aug. 6, 1926 5 Sheets-Sheet l ,MMMVW J-..

J. M. GAUNTLETT ENVELOPE MACHINE Feb. 19, 1929.

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INVENToR Jrrzes MGa unc'f Feb. 19, 1929. 1,702,733

J. M. GAUNTLETT ENVELOPE MACHINE Filed Aug. 6, 1926 5 Sheets-Sheet 3 INVENToR 30 J. M. GAUNTLETT ENVELOPE MACHINE Feb. 19, 1929.

Filed Aug. 6, 1926 5 Sheets-Sheet 7 4 a M., 7 W75 VT 6 u 5 J- 6 Q z 0 o 61h: s .w m d wl M ...om 4\\| m H vu. 1J W TToRNEY Feb. 19, 1929. 1,702,733

J. M. GAUNTLETT ENVELOPE MACHINE Filed Aug. e, 1926 5 sheets-sheet .5 1174"?. 21 .f6 .f5 43 47 y0 4272?. 25 g4 j0069 68 2 j 321 INVENToR j l A'TORNEYV Patented Feb. 19, 1929.vv i

UNITED STATES V1,702,133 PATENT OFFICE.

JAMES M. GAUNTLETT, OF SEATTLE, WASHINGTON.

ENVELOPE MACHINE.

Application led August 6, 1926. Serial No. 127,543.

The primary aim and fundamental ob'ect of the present invention is the provision o an envelope machine especially designed and adaptable for continuously printing and forming, from two, continuous strips'of material, sanitary envelopes or casings having open ends for use by laundries, d ers, dry cleaners and the like for individual y enclosing or covering shirts, soft collars, cus,

1o waists, or other articles of wearing-apparel, to thus positively protect and insure of the same being delivered to the owners thereof in a clean, sanitary, and proper condition.

Contemplated by this invention is the provision of an envelope machine for the fabrication of envelopes from a. continuous strip of relatively stiff material and a continuous strip of relatively flexible material of greater width than the first named strip, which strips are preferably furnished or supplied to the machine in rolls, wherefrom the strips are withdrawn and passed through the machine in superimposed relation with the wider of the two strips on top, so that the overlapping edges of the upper strip may be folded upon and attached to the underside of the lower strip during passage of such combined strips through the machine. f'

The invention is also primarily and particularly concerned and essentially resides in apparatus for making envelopes of different widths and lengths embodyin devices for supporting the rolls of material of the selected and desired widths from whichA the 35 continuous superimposed strips are withdrawn and passed through the apparatus to form the envelopes, said devices having mechanisms incorporated therewith for aligning and tensioning such'continuous superimposed strips; in printing mechanism for making the desired and selected printed impressions at uniform spaced intervalsv upon one ,of said strips; `in laterally adjustable adhesive applying mechanism for coating portions of one `of said strips adjacent the side edges thereof; in novel interchangeable mechanisms for folding the side edges of the uncoated strip upon the side edges of the coated strip; in a series of laterally adjustable ironing rolls for pressing the coated folded edges of said strips to cause the said edges to adhere to each other; in novel adjustable mechanism for cuttingfthe combined strips into envelopes of a predetermined and desired length, in intermittently actuated delivery mechanism for receiving regulated to predeterminately control their respective actions, all of which are important objects of the invention and are to be correlated in the broad aim of enhancing the efficiency of the apparatus for the uses and purp oses for which the same is especially deslgned.

The above, and additional objects which willbe hereinafter more specifically treated are attained by such means as are shown in the accompanying drawings, described in the following specification and then more clearly pointed out in the claims, which are appended hereto and form part of this application.

With reference to the drawings, in which there is illustrated one complete embodiment of the invention with certain modified forms of sub-mechanisms therefor, and throughout the several views of which like characters of reference designate similar parts Figure 1 is a side elevation of the envelope plachine comprehended by the present inven- Fig. 2 is a longitudinal medial section thereof.

Fig. 3 is an elevation of the feed end of the machine.

Fig. 4 is a fragmentary vertical transverse section taken through4-4 of Fig. 2. .s

Fig. 51s a longitudinal medial section of one of the duplex adhesive or glue applying mechanisms of the machine.

Fig. 6 is a fragmentary plan view of the gluing, folding and ironing mechanisms of the machine.

Fig 7 is a longitudinal sectionl of the same taken through 7-7 of Fig. v6.

Figs. 8, 9, 10 and 11 are fragmentary vertical transverse sections taken through 8 8, 9 9, 10-10 and 11-11, respectively, of Fig. 7.

Figs. 12 and 13 are similar sections taken through `12-12 and 18-13, respectively, of Y Fig. 16 is a fragmentary side elevation of the intermittentl actuated delivery mechanism of the mac ine.

' Fig. 17 is a fragmentary side elevation of the paper aligning and tensioning mechanismfor the feed end of the machine.

Fig. 18 is an end elevation of one of the edge folding members of the machine, as it would appear when detached therefrom.

Fig. 19 is a fragmentary plan view of a slightly modified form of edge folding mechanism.

Fig. 20 is a vertical transverse section of the sametaken through 20-20 of Fig.19.

Fig. 21 is a fragmentary plan view of a still further modified form of edge folding vmech.- anism.

Fig. 22 is a longitudinal section of the same taken through 22--22 of Fig. 21.

Figs. 23 and 24 are fragmentary vertical transverse sections taken through 23-23 and 24-24, respectively, of Fig 21, and

Figs. 25 and 26 are, respectively, front and rear perspective views of the envelope made by the machine.

Beginning the more detailed description of the invention by reference to the drawings, the numeral 30 designates rigidly/interconnected spaced arallel side frames, which form and constitute the main frame of the machine and are so fabricated as to accommodate the several working parts of the same. The various instrumentahties which operate upon the materials from which the envelopes are formed, are arranged preferably in groups .or units, as hereinafter described, so that each separate unit is rendered readily accessible for rapid adjustment and may be expeditiously removed from the machine for purposes of repairs or replacement without disturbing or disassembling the other correlated units thereof.

The materials from which the envelopes are made consists of continuously travelling strips or webs 31 and 32 of slightly different widths, which preferably are furnished to the machine in the form of rolls 310 and 320, respectively, the roll 310 consisting of relatively stiif material, such as cardboard, or the like, for forming the back portions 311 of the envelopes, see Fig. 26, and the roll 320 consisting of relatively flexible material, such as transparent or semi-transparent paper, or the like, for` forming the front portions 321 of the envelopes, see Fig. 25. The strip 32 is slightly Wider than the strip 31 and is superimposed thereon, while the strips are passing through the machine, so that the edges of the strip 32 overlap the edges. of the strip 31 and are folded thereunder and attached thereto, by devices hereinafter described, during the passing aforementioned,

to thus secure the edges of the front portions 321 of fthe completed envelopes to the back portions 311, substantially in the manner indicated at 322 in Figs. 25 and 26 The spe-v n grally formed upon the lower portions of, the side frames 30 and extending therefrom at the feed or insert end of the machine. 'I he roll of paper 320 is similarly mounted upon a spindle 34 also journalled adjacent the terminals Vthereof in brackets integrally formed upon the upper portions -of the side frames 30 and extending upwardly therefrom at the feed end of the machine, so` that the roll 320 is disposed above the roll 310 in s aced parallel relation thereto, as more clear y illustrated in Figs. 1, 2 and 3. Mounted upon one of the side frames 30 for brake or frictional engagement with the spindles 33 and 34 are aligning and tensioning devices or mechanisms 35 for the continuous strips 31 and 32, which devices may be of any desired type and function in a well known and obvious manner to retain the strips 31 and 32 in.-

proper alignment relative to each other and to maintain the proper and requisite tension thereon.

The strip 31 passes from the roll 310 over a guide roller 36 journalled at the ends within the side frames. 30, while the strip 32 passes from the roll 320 under a guide roller 37 sim'- ilarly journalled within the said side frames in juxtaposition to the guide roller 36, whereat and whereby the strips 31 and 32 are brought into contiguous and superimposed relation. The superimposed strips thence -pass between an impression'cylinder 38 and a type or plat-e cylinder 39 of a printing mechanism of usual construction, the desiredy n'ected and actuated by a gear train 40 in mesh Y.

ladjust the machine to accommodate strips of varying widths. The shafts 46 and 47 are interconnected by spur gearing 49, which latter is connected by4 a pinion 50 to the gear train 4Q.

The superimposed strips after passing between the rolls 44 and 45 are inclined upwardly to pass over and to permit the underside of the strip 31 adjacent the edges thereof contacting with duplex adhesivey applying disks 51 running in boxes 52 containing glue, gum, paste or other suitable adhesive. The disks 51 are adjustably secured upon a shaft 53 journalled at the ends thereof within the side frames 30, said disks 5l and the correlated adhesive containing boxes 52 are mounted upon the shaft 53 for axial or lateral adjustment thereon, whereby the disks 51 may Contact with and appl adhesive to the underside of the strip 31 a jacent the edges thereof irrespective'of the width of the same. The laterally adjustable adhesive containing boxes 52 rest upon and are supported by transversely disposed bars 54 rigidl7 secured at the ends thereof in spaced para lel relation to the inner faces of the side frames 30. The shaft 53 is driven by sprocket gearing 55 from the shaft 46 of the feeding rolls 44, and in this connection it will be observed by referring to Fig. 8 that the adhesive applying disks 51 are of slightly smaller diameter than the sprocket wheel of the sprocket gearing 55 secured to the shaft53, so that the peripheral speed of said disks is slightly less than Ythe rectilinear speed or movement of the strip 31, to thereby positively insure of the adhesive-being applied thereto, in the manner hereinbefore described. The boxes 52 are supplied with adhesive through funnels 56,

which are connected thereto by conduits' or' pipes 57 extending through and being slidably mounted within the side frames 30. The boxes 52 are also provided in the side walls thereof with overflow apertures 58, see Fig. 5,

. which readily permitexcess adhesive to drain therefrom into drip pans or other suitable devices, not shown. d

From the duplex adhesive applying mechanisms the superimposed strips aredeflected upward to pass over an interchangeable angular edge folding plate or member 59, the angularly disposed portions of which form and constitute at their juncture an apex or ridge 60 therefor, whereat and whereon said strips are bent for deflection in a downward direction. The plate 59 is detachably secured to the side frames 30 in any suitable manner and consists of a rectangular rear portion 61 inclined upwardly toward the apex 60 and a downwardly inclined and convergent for.- ward portion 62 extending from the apex 60 toward the delivery. end of the machine. The rectangular rear portion 61 is slightly wider than thestrip 31 but is somewhat narrower than the strip 32 and is provided adjacent the side edges thereof with longitudinally disposed grooves 63 for the purpose of preventin the adhesive coated portions of the side e ges of the strip 31 contacting therewith for obvious reasons. Bending the upwardly deflected superimposed strips at the apex 60 and dellecting or inclining the same downwardly thereat and therefrom causes slackening of the overlapping edges of the strip`32 between points adjacent the duplex adhesive applying mechanism and the apex 60, see Fig. 6, resulting in the natural curling or folding of said edges under the grooved edges of the ortion 61, see Figs. 9 and 10.

-Actual experience has demonstrated that it was necessary and essential to deflect the portion of the strip 32 is held taut between said points and the overlapping edges of the same are free, thereby causin and producing a natural curling or fol ing under of such edges. As the combined strips pass over the apex 60 the curled or folded edges of the strip 32 enter forwardly convergent channel guides 64 dispsed in the angular plane of the downwardly inclined convergent forward portion 62. The channel guides 64 are preferably flared at their rear ends and upon their undersides to facilitate and expedite the entrance and passage of the curled and folded edges of the strip 32 therethrough, as more clearly indicated in Fig. 18, and are mounted for lateral adjustment upon a transversely disposed slotted bar'65 rigidly secured at the ends thereof upon the side frames 30, see Fig. 11, to thereby accommodate the same for different widths of 'superimposed strips. However, in some instances'the channel guides may be and are dispensed with, as indicated in Fi s. 19 and 20, for the reason that the edges ofthe strip 32 having once been curled or folded will not uncurl or unfold after passing over the apex vergeht guides 64 such edges are brought into contact with the adhesive coated edge portions of the strip 31 adjacent the forward ends of said guides, See Fig. 7, and as the forward portion 62 `converges downwardly from the apex 60, see Figs. 6 and 11, ample clearance is provided thereby and thereat to positively insure of the folded edges of the strip 32 contacting with the adhesive coated edge portions of the strip 31.

From the edge folding mechanism the coated folded edges of the superimposed strips pass successively between a series of ironing rolls,the lower rolls 66 of which series are mounted for axial or lateral adjustment upon shafts 67 journalled at their ends within the side frames 30, while the upper or pressure rolls 68 of the series are mounted for similar adjustment upon shafts 69 journalled at their ends within spring-pressed movable bearings 70 mounted Within the side frames 80. Journalled in suitable bearings rigidly secured at intervals upon the upper portion of one of the side frames is a longitudinally disposed counter-shaft 71 connected at the rear end thereof by miter gearing 72 to the shaft 46 of the drawing ofi rolls 44 to receive rotary motion therefrom. rlhe counter-shaft 71 is connected by miter gearing 73 to the shafts 66, which latter are lconnected by spur gearing 7 4 to the shafts 69,

see Fig. 12. By successively passing the coated folded edges of the strips between the series of ironin rolls herein described, such edges are cause to positively adhere, as will be manifest and apparent by referring to Fig. 12.

From the series of ironing rolls the completed combined strip passes over a stationary blade 7 5 the length of which is slightly greater than the width of said strip, and which is detachably secured to a transversely disposed bar 7 6' rigidly secured at the ends thereof to the inner faces of the side frames 30 at the delivery end of the machine. A rotary lrnife 77 journalled at the ends thereof within adjustable bearings 78 mounted within the side frames 30 adjacent the stationary blade 75 is provided with a radially adjustable blade 79, the length of which is substantially equal to that of said stationary blade 75 with which it co-acts to cut the completed strip passing thereover into envelopes of predetermined uniform lengths, of the type indicated in Figs. 25 and 26. To eHectually preclude the possibility of the cut tero minal of the completed strip dropping below the plane of the stationary blade cutting edge following each cutting operatiomsee Fig. 15, and to positively insure of said cut terminal being fed to and passing over the stationary blade 7 5 following each cutting operation, a transversely disposed resilient l or'K spring member 80-curved or bent rearwardly and upwardly upon itself is rigidly secured along I l weaves the forward edge thereof to the stationary blade 7 5 having its free curved rear edge portion in normal contact with the underside ofthel completed Strip in order to elevate the cut terminal thereof following each cutting operation, and to positively insure ofthe proper feeding of the same to the cutting mechanism, as indicated more clearly in Fig.

`15. 'llhe rotary knife is connected by spur gearing 81 and miter gearing 82 'to the counter-shaft 71, see Figs. 1 and 13. Obviously,

`looped ends and over pulleys 85 at the outer looped ends. The pulleys 84 are rigidly secured to a shaft 86 journalled at the ends within the delivery end of the machine, while the pulleys 85 are similarly secured to a shaft 87 journalled at the ends within a folding frame 88 extending outwardly fromthe delivery end of the machine, see Figs. l and 2. The shaft 86 is intermittently actuated by a ratchet mechanism 89, of well known form, mounted thereon and pivotally connected by a pitman 90 to a cranlrdisk 91 rigidly secured upon the adjacent projecting journalled end of the rotary knife 77, as more clearly illustrated in Figs. 13 and 16. lntermittently actuated endless guide belts or tapes 92 passing over pulleys 93 rigidly secured to shafts 94 serve to lguide the completed envelopes upon the delivery belts 83 and etectually prevent 'displacement of the same therefrom following cutting operations, see Figs. 1, 2, 14 and 15, said belts 92 also function to .maintain and retain the completed envelopes in superimposed stepped relation upon the delivery belts 83, as more clearly shown in Fig. 15. The inner shaft 94 is journalled at the en'ds thereof within the delivery end of the machine, while the outer shaft 94 is journalled at the ends in the outer ends of aframe 95 pivotally mounted at the inner ends thereof upon the inner shaft .94, whereby i such frame with the correlated beltsthereof may be swung upwardly upon said inner shaft 94 when desired to expedite and facilitate the removal of any envelopes deposited from to and between the pulleys 84, see Figs.` 2, 14 and 15, to guide and supportthe inner ends of the completed envelopes and prevent the same from becoming entangled between the said bar 7 6 and the delivery belts 83, while also aiding in advancing the completed envelopes toward the guide belts 92, as shown more clearly in Fig. 15.

In Figs. 19 and 20, an edge folding plate or member designated generally by the numeral 98 is fabricated and detachably secured to the side frames in an identical manner and for a similar purpose, as hereinbefore described for the plate 59. rlhe platev 98 iS somewhat narrower than the plate 59 and is especially designed for use with superimposed strips of considerably lesser width than the strips 31 and 32. The plate 59 is used to fabricate and form envelopes or casings for shirts and the like, while the plate 98 is substituted therefor when desired and utilized to fabricate and form narrow elongated envelopes or casings for soft collars, cuffs and the like, in which latter event rolls of material of narrower width than the rolls 310 and 320 are furnished to the machine and the several laterally adjustable units of the machine adjusted to accommodate the narrower strips, as will be manifest and apparent.

In Figs. 21 to 24, inclusive, the edge folding plates 59 and 98 are dispensed with and a roll 99 substituted therefor, which roll is rigidly secured t0 a shaft 100 journalled at the ends thereof within bearings 101 detachably secured upon the side frames 30. The

, roll 99 adjacent the ends is provided with pea plane above that of thedisks 51, see Fig. 22, so that the superimposed stri s 31 and 32 ripheral grooves 102 to prevent the adheslve coated portions of the strip 31 contacting with the periphery thereof. The length of the roll 99 is slightly greater than the width of the strip 31 and somewhat shorter than 'the width of the strip 32, so that the overlapping edges of the latter strip may fold downwardly over the ends of thesaid roll, see Fig. 23, as the superimposed strips pass thereover. The top of the roll 99 is disposed inv are deflected upwardly there rom to pass over said roll and are deiiected downwardly 4thereat to pass between the series of ironing rolls 66 and 68, such upward and downward deiection of said strips cause vnatural downward folding of the overlapping edges of the stri 32 from points adjacent the adhesive app ying mechanisms to the top of the roll 99 and wherefrom the foldingaction of such ed eS continues until the same are folded under t e adhesive coated edgesof the strip 31 immediately preceding the passing of the combined stri s between the ironing rolls 66 and 68, see igs. 22 and 24, whereafter said vstrips are acted upon in the identical manner ashereinbefore described. The roll 99 j is formed and fabricated in diEerent lengths to accommodate different widths of superimposed strips. When no printing is required upon the envelopes the impression and type vcylinders with their correlated inking mechanism are dispensed with and the superimposed strips 31 and 32 pass directly from their respective guide rolls 36 and 37 to the drawing off rolls 44 and pressure rolls 45.

Manifestly, therefore, the machine herein disclosed is readily convertible to fabricate envelopes of different widths and lengths with 'orwithout printing matter thereon, is extremely simple, durable, ,and economical in construction, is convenient to use, is positive and eiicient in operation, will not readily get out of order, and conserves much time, labor and material in the manufacture of the type of envelopes or casings herein vshown and described. Y

While I have herein shown and described the invention with sufficient detail to enable those skilled in the art to understand the Inode of construction and the principles nvolved, it is to be Vunderstood that there is no intentional limitation herein to the specific form and precise details of constructlon of the invention shown and described, except as expressly defined by the appended claims, and that various modifications of such construction maybe resorted to without departing from the invention or the benefits derivable therefrom. I also desire it to be understood that certain features of the invention herein shown and described may be employed in and with other combinations than those herein shown.

What I claim as my invention, and desire to secure by Letters Patent, is j 1. In an envelope machine, the combination vwith mechanism for supporting and feeding two continuous strips therethrough, of means for adhesively coating the edge portions of one of said strips, means for laterally bending said strips whereby the edge portions of one strip are folded upon the ed e portions of the other strip, means for adhesively engagin the edge portions of said strips, and means or cutting said combined strips into envelopes of a predetermined uniform length.

2. In an envelope machine, the combina tion with mechanism for supportin and feeding two continuous strips 'of di erent widths therethrough, of means for adhesively coating the edgeportions of one of said strips, means for laterally bending said strips at intervals whereby the edge wider strip fold upon thee ge portions of the narrower strip, means for applying pressure to the edge portions of said strips, and means for cuttin the combined stri s into envelopes of pr etermined uniform ength.

3. In an envelope machine, the combinaortions ofl thetion with mechanism for supporting and feeding two continuous strips of diderent widths therethrough, of means for adhesively coating the edge portions of the narrower of said strips, means for'late'rally bending said strips at lrre ular intervals whereby the edge portions of t e wider of said strips are initially curled between the first and second points of laterally bending of the strips and are finally folded uponvthe edge portions of the narrower of said strips between the second and third points of lateral bending of the same, means for adhesively engaging the edge portions of said strips, and means for cutting the combined strips into envelopes of a predetermined uniform length.

d. .In an envelope machine, the combination 'with mechanism for supporting and feeding two continuous strips of different widths therethrough, of means for adhesively coating the edge portions of one of said strips,` means for temporarily deflecting the strips from a normal line of travel whereby the edge portionsof one strip is folded upon the edge portions of the other strip, means for adhesively uniting the edge portions of said strips, and means for cutting said combined strips into envelopes of a predetermined uniform length.4

5. ln an envelope machine, the combination with mechanism for supportin and feeding two continuous strips of di erent widths therethrough, of means for adhesively coating the edge portions of one of said strips, means disposed out of the plane of normal travel of said strips for temporarily deflecting the same therefrom whereby the edge ortions of one strip are folded upon the edge portions of the other strip, means for adhesively engaging the edge portions of said strips, and means for cutting the combined strips into envelopes of a predetermined uniform length.

6. 1n an envelope machine, the combination with mechanism for supportin and feeding two continuous strips of di erent widths in superimposed relation therethrough, of means for adhesively coating the underside of the lower narrower strip adjacent the edge portions thereof, means disposed above the plane of normal travel of said strips for temporarily rdeflecting the same therefrom whereby the overlapping edge portions of the upper wider strip are folded under the coated edge portions of the lower narrower strip, means for adhesively uniting the edge portions of said strips, and means for cutting the combined strips into envelopes of a predetermined uniform length.

7. In an envelope machine, the combination with mechanism for supporting and feeding two continuous strips of different A widths in superimposed' relation therethrough of means for adhesively coating the undersi g e of the lower narrower strip adj aweaves cent the edge portions thereof, an angularly the path of rectilinear travel of said strips having the apex thereof disposed above the plane of normal travel of the strips for temporarily deflecting the same therefrom whereby the overlapping edge portions of the upper wider strip are folded under the coated edge portions of the lower narrower strip, means for adhesively uniting the edge portions of said strips, and means for cutting the combined strips into envelopes of a predetermined uniform length.

8. ln an envelope machine, the combination with mechanism for supporting and advancing two continuous strips of different widths in superimposed relation therethrough, of means for adhesively coating the underside of the lower narrower strip adjacent the edge portions thereof, a laterally bent plate longitudinally disposed in the path of rectilinear travelof said strips having the apex thereof disposed above the plane of normal travel of the strips for temporarily defiecting the same therefrom whereby the overlapping edge portions of the Aupper wider strip are folded under the'coated edge por-- tions of the lower narrowerstrip, means for adhesively uniting the' edge. portions of said strips, and meansl for cutting the combined strips into envelopes of a predetermined uniform length.

9. lln an envelope machine, the combination with mechanism for supporting and advancing two continuous strips of Ydifferent, widths therethrough, of meansl for adhesively coating the edge portions of one of said stri s, an edge folding plate longitudinally disposed in the path of rectilinear travel of said strips having a rectangular rear portion and a convergent forward portion and being laterally bent at the juncture of said portions to form an apex for temporarily deflecting the strips from a normal line of travel whereby the edge portions of one strip is folded upon the edge portions of the other strip, means for adhesively uniting the edge portions of said strips, and means for cutting the combined'strips into envelower strip and a downwardly and forwardly inclined convergent portion and being laterally bent at the juncture 'of said portions to forma lateral ridge thereon extending above the plane of normal travel of thestrips for temporarily deiiecting the Same therefrom whereby the overlapping edge portions of the upper Wider strip are initially curled under the grooved edges of said rectangular portion and are finally folded upon the coated edge portions of the lower narrower strip adjacent said convergent portion, means for adhesively uniting the edge portions of said strips, and means for cutting the combined strips into envelopes of a predetermined uniform length.

11. In an envelope machine, the combination with mechanism Ifor supporting and advancing two continuous strips therethrough, of means for adhesively coating the edge portions of one of said strips, an angular edge folding plate for folding the edge portions of the other of said strips upon the coated edge portions of the first named strip, channel guides for guiding said edge portions during the folding thereof, means for adhesively unitin the edge portions of said strips, and means for cutting the combined strips into envelopes of a predetermined uniform length.

l2. In an envelope machine, the combination with mechanism for supporting and advancing two continuous strips therethrough, of means for adhesively coating the edge portions of one of said strips, an angular edge folding plate for folding the edge portions of the other of said strips, upon the edge portions of the coated strip, forwardly convergent channel guides for` guiding said edge portions during the folding thereof, means for adhesively uniting the edge portions of said strips, and means for cutting the combined strips in'to envelopes of a predetermined uniform length.

In testimony whereof I affix my signature.

JAMES M. GAUNTLETT. 

